Created Tuesday, Jan 10th 2023 20:44Z, last updated Tuesday, Jan 10th 2023 20:44Z
A Westjet Encore de Havilland Dash 8-400, registration C-FHEN performing flight
WS-3210 from Comox,BC to Calgary,AB (Canada) with 78 passengers and 4 crew, was climbing through 14,000 feet out of Comox when the crew received indication to check their right hand engine fire detection system associated with a Master Warning. The crew worked the related checklist, shut the engine down, discharged both fire bottles, declared Mayday and turned to return to Comox. A Engine Fire Warning associated with another Master Warning activated during the descent towards Comox. The aircraft landed back in Comox without further incident, emergency services did not detect any fire or thermal issue with the engine. The passengers disembarked onto the runway and were taken to the terminal, the aircraft was subsequently towed to the apron.
The Canadian TSB reported maintenance found 2 pins of a connector in the engine fire warning system had partially shorted together. The connector was replaced.
